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Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)
ISSN:2141-7016
| Abstract: Unveiling the lithological and reservoir mapping, well correlation, petrophysical analysis and structural mapping of ?FEMTOP FIELD? offshore Niger Delta,the data used includes;FieldBase Map, Four wells with Spontaneous Potential (SP), GR Log,Density Logs, Resistivity, and Seismic data in SEG-Y format. The Petrophysical analysis, Structural interpretation of ‘‘Femtop field’’was carried out to identify the reservoirs and map faults from the 3-D seismic volume using Schlumberger (PETRELTM) software (i.e. Well data input, Delineation of lithology and Seismic to well tie). Time and depth structure maps in combination with well logs were used to map four reservoirs (A, B, C,and D), and four horizons (H1 to H4).Calculated petrophysical values of the reservoirs in each of the wells show that each formation has varying degree of petrophysical parameters. The average water saturation in these reservoirs is low, ranging from 27% to 45% with a corresponding hydrocarbon saturation ranging from 56% to 72%.Two major growth faults (F3 and F5), three antithetic faults (F1, F2 and F4) also were mapped. Therefore, structural closures identified as rollover anticlines, are displayed on the time/depth structure maps, suggest probable hydrocarbon accumulation at the downthrown side of the fault F3 attesting to the structural characteristics of identified reservoirs within the subsurface of study area. Hence, the integration of well logs with seismic data has largely enhanced the success of the petrophysical analysis and structural mapping in identifying the probable growth faults and other structural closures responsible for hydrocarbon accumulation within the study area. |
| Keywords: Petrophysical Parameters, Spontaneous Potential, Density Logs, GR Logs, Structural Closures |
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